Forging for car-truck side frames.



W. D. FORSYTH.

FORGING FOR 01m TRUCK SIDE FRAMES.

APPLIOATIOH FILED JUNE 16, 1913.

1,125,287. Patented Jan.19,1915.

WITNESSES:

rare.

WILLIAM D. FORSYTH, OF YOUNGSTOWN, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS,TO RAILWAY PRODUCTSCORPORATION, OF BUFFALO, NEW YORK, A CORPORATION OFNEW YORK.

FORGING FOR CAR-TRUCK SIDE FRAMES.

Specification of Letters Patent Patented J a n. 1.9, 1915.

Application filed June 16, 1913. Serial No. 773,855.-

To all whom it may concern Be it known that I, \VILLIAM D. FonsYrH, acitizen of the United States, residing at Youngstown, in the county ofMahoning and State of Ohio, have invented new and useful Improvements inForgings for Car-Truck Side Frames, of which the following is aspecification.

This invention relates to improvements in forgings for car-truck sideframes.

Among the objects to be obtained by the invention are the following:-

The principal object of my invention is to produce a forging for acar-truck side frame which will be light for its strength and which canbe'easily and cheaply made.

The invention consists in a forging for a car-truck side frame which ismade from a flanged rolled section and in which the metal is distributedso that said forging will be light and also support the loads which areimposed on it when it is in use.

In the accompanying drawings forming part of this specification, Figure1 is a side view of a rolled section from which said forging isfabricated; Fig. 2 is an end view of Fig. 1; Fig. 3 is a side view ofFig. 1'

when the rolled section thereof has been sheared and slotted preparatoryto expansion; Fig. 4 is a side view of the forging after the shape shownin Fig. 3 has been expanded, showing the ends of the forging as they aremade in accordance with the invention; and Fig. 5 is a side view similarto Fig. 4, showing a modified construction.

Like reference characters refer to like parts throughout the severalviews:

The forging which I have shown as embodying my invention is made from asingle piece of metal, preferably a rolled section 1, which has a web 2.a top flange 3, and a bottom flange 4. The top flange 3 has a largercross-section than the bottom flange 4, and is preferably U-shaped, witha body 3', and two auxiliary flanges 3", as

shown in Fig. 2.

The web 2 of the rolled section 1 is cut away for a short distance ateach end from the flanges 3 and 4. and the ends of the flange 3 are cutoff for a short distance so that the flange 3 is shorter than the flange.4. In the web 2 is a slot 5 which extends longitudinally thereof forpart of its length between its ends, and which is located approximatelymidway between the flanges 3 and 4. a v

The rolled section 1 is expanded in a direction substantially at rightangles to the slot 5. or in the plane of the. web2, into an open frame15 as shown in Fig. 4. This expanding maybe done by any suitableapparatus while the rolled section 1 is either hot or cold.

The rolled section 1 is preferably expanded so that tllGSlOtll opens outinto a substantially hexagonal opening 10 which is adapted to receive abolster. After the rolled section 1 is expanded, the web 2 forms uponthe flanges 3 and 4 a continuous rib which extends around the opening10. Each end of the flange 4 is bent along a transverse line 13 tocontact with the end 14 of the web 2, and then along a second transverseline 12 to contact with the under face of the top flanges 3. The ends ofthe upper flange 3 and the ends of thelower flange 4 which are incontact form extensions 7, one of theextensions 7 projecting from eachend of the open frame 15. The upper or compression member of the openframe 15 has a middle portion 6 which lies in a plane spaced above andparallel to the plane of the extensions 7 and which is connected to saidextensions by 'two downwardly inclined portions 8.

The lower or tension member of the open frame 15'has a middle portion 9which lies in a plane spaced below and parallel to the plane of theextensions 7 and which is connected to said extensions by two upwardlyinclined portions 11. In the extensions 7 are holes 16, through whichare passed the bolts which fasten the journal boxes to "the open frame15.

In the modified construction shown in Fig. 5, the auxiliary flanges 3"are cut away from the middle portion 6 of the upper member between theends of middle portion 6 in order to reduce the vertical height of theopen frame 15 and to decrease its weight. Also, the weight of the openframe 15 is further reduced by cutting away the auxiliary flanges 3 fromthe extension 7. The removal of the portions of the auxiliary flanges 3"as described leaves a greater cross section in the downwardly inclinedportions masses Obviously, the structure which I have shown anddescribed may be considerably modified without departing from myinvention; and I do not wish, therefore, to be limited to the exactstructure which I have shown and described.

\Vhat I claim as my invention is 1. A forging for a car truck si madefrom a single piece of metal and comprising an upper member and a lowermem ber Whose middle portions are spaced apart to form an opening, saidmembers being connected near their ends by a split web which is integralwith said members and surrounds said opening, the end portions of eachof said members extending beyond the ends of said web, each end portionof said lower member being bent against the corresponding end of saidweb and into contact with the corresponding end portion of said uppermember, saidupper member having a cross-section greater than said lowermember.

2. A, forging For a car truck side frame made from a single piece ofmetal and comprising an upper member and a lower member whose middleportions are spaced apart to form an opening, said members beingconnected near their ends by a split web which is integral with saidmembers and surrounds said opening, the end portions of each of saidInembc" s extending beyond the ends of said web, each end portion ofsaid 3. A forging lower member being bent against the can responding endportion of said upper member, said upper member having a middle portionthereof lying in a plane parallel to and spaced above the plane of itsend portions, the portions of said upper member between said middleportion and said end portions having a cross-section greater than saidlower member.

for a car truck side frame made from a single piece of metal andcomprising an upper member and a lower member whose middle portions arespaced apart to form an opening, said members being connected near theirends by a split web which is integral with said members and surroundssaid opening, the end portions of each of said members extending beyondthe ends of said web, each end portion of said lower member being bentagainst the corresponding end of said web and into contact with thecorresponding end portion of said upper member, said upper member havinga crosssection greater than said lower member,

said abutting end portions of said members lying in a plane parallel toand spaced above the line extending longitudinally midway between saidmembers.

In witness whereof, I have hereunto my hand in the presence of twosubscribing witnesses.

WILLIAM D. FORSYTH. Witnesses:

M. E. 'Inosms, A. M. Nnnrnn.

